Samsung Sdi Co., Inc.

Nam Hyo Kim

Jung Min Lee

Ha Na Kim

Kee Wook Kim

Hyeon Sun Choi

Byung Min Lee

Jung Yoon Lee

Yong Bae Lee

Myung Kook Park

Yang Seob Kim

Ji Hyun Chun

Hyo Sang Yun

The present invention relates to a separator comprising a coating layer and a battery using the same, the separator having improved adhesive force to an electrode, thereby minimizing the rate of thickness change. More specifically, the present invention relates to a separator having a coating layer on one or both surfaces of a base film, the coating layer comprising an acrylic-based copolymer having a glass transition temperature of less than or equal to 80&#xb0; C. and an inorganic particle, so as to have improved adhesive force and heat resistance, thereby being applicable in electrochemical batteries of various sizes and having excellent thermal stability and dimensional stability.

Separator comprising coating layer, and battery using same

The present invention relates to a separator comprising a porous substrate and an adhesive layer on one surface or both surfaces of the porous substrate, wherein the adhesive layer includes an acryl-based copolymer containing a (meth)acrylate-based monomer-derived repeating unit and having a weight average molecular weight of 400,000 g/mol to 750,000 g/mol; and to a secondary battery comprising the separator.

Separator and secondary battery using same

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Suwon-si, South Korea

Nam Hyo Kim